Home / 21,128.04-29,157.14-11,568.33

Finding the Fourth Proportional to 21,128.04, 29,157.14 and 11,568.33

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Solution

The fourth proportional to 21,128.04, 29,157.14 and 11,568.33 is: 15,964.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,128.04 : 29,157.14 = 11,568.33 : x
  2. Step 2: Convert to fraction form
    21,128.04/29,157.14 = 11,568.33/x
  3. Step 3: Cross multiply
    21,128.04x = 29,157.14 × 11,568.33
  4. Step 4: Simplify right side
    21,128.04x = 337,299,446.30
  5. Step 5: Solve for x
    x = 337,299,446.30/21,128.04
  6. Step 6: Final answer
    x = 15,964.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.